The rapper, who is already facing serious taxdebt, just had his 3,500 square foot, 2-bedroom, 3-bathroom home in Georgia foreclosed upon after he defaulted on his loan payments to SunTrust bank!

According to records, the house - which has a walk-in pool, hot tub, theater, gym, game room, and granite counter-tops - was originally purchased in 2004 for $585,000, but Nas only could pay off $78,000 before realizing he couldn't foot the rest of the bill!

As a result, the home went to the highest bidder at a public auction last month who only had to pay $348,500!

Ouch! That HAD to have hurt!

Sometimes you just have to learn the hard way that Uncle Sam always wins!

But now, that's all about to change, at least according to TMZ! That's because a week from tomorrow -- on December 17 -- Khloé and Lamar's split will be legal, final, and FULL! And that's all she wrote!

As the final divorce docs are set to be stamped by a judge on that day just over a week from right now, the final terms are pretty standard and straightforward, too: